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Finding the Fourth Proportional to 361,873.70, 542,810.55 and 268,561.70

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Solution

The fourth proportional to 361,873.70, 542,810.55 and 268,561.70 is: 402,842.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,873.70 : 542,810.55 = 268,561.70 : x
  2. Step 2: Convert to fraction form
    361,873.70/542,810.55 = 268,561.70/x
  3. Step 3: Cross multiply
    361,873.70x = 542,810.55 × 268,561.70
  4. Step 4: Simplify right side
    361,873.70x = 145,778,124,085.94
  5. Step 5: Solve for x
    x = 145,778,124,085.94/361,873.70
  6. Step 6: Final answer
    x = 402,842.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.